How can I access music & recordings from old iTunes account that no longer exists?

I have an old itunes account with an email that no longer exists. I would like to access the music I wrote and recorded. Some were voice message recordings and some were uploaded digitally from recordings I made. Any advice for me? Basically I don't care about the old songs I purchased. I just want to recover songs I wrote and recorded from voice message app and uploaded from digital recordings I made. I also don't care about merging my accounts as long as I can gain access to the original digital files (my recordings)

[Edited by Moderator]